From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Thu, 29 Jun 2017 17:28:47 +0000 (+0200)
Subject: combine: Print insns with the cost dump
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e9d22c8ab3c3b73a9ed5892e120c869b12eeb85c;p=gcc.git

combine: Print insns with the cost dump

In the combine dump file, at the start there is a list of the RTL cost
of every insn.  The only thing listed about the insns is the UID though.
To make it more useful, this patch prints the insn itself as well (in
slim format).


	* combine.c (combine_instructions): Print insns to dump_file, together
	with their costs.

From-SVN: r249802
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2f339ccb3b1..dac1d7af9a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-06-29  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* combine.c (combine_instructions): Print insns to dump_file, together
+	with their costs.
+
 2017-06-29  Jan Hubicka  <hubicka@ucw.cz>
 
 	* asan.c (asan_emit_stack_protection): Update.
diff --git a/gcc/combine.c b/gcc/combine.c
index 2d49bc2233c..e99382685c3 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -1213,8 +1213,10 @@ combine_instructions (rtx_insn *f, unsigned int nregs)
 	      INSN_COST (insn) = insn_rtx_cost (PATTERN (insn),
 	      					optimize_this_for_speed_p);
 	    if (dump_file)
-	      fprintf (dump_file, "insn_cost %d: %d\n",
-		       INSN_UID (insn), INSN_COST (insn));
+	      {
+		fprintf (dump_file, "insn_cost %d for ", INSN_COST (insn));
+		dump_insn_slim (dump_file, insn);
+	      }
 	  }
     }